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Most Common Planning Applications in Runnymede

Not all planning applications are created equal. The gap between the highest and lowest approval project type in Runnymede is 36.0% — that's the difference between near-certainty and a coin flip. What you build matters as much as where you build it.

8,554 real decisions·17 project types·Updated September 2026
94.1%
Safest: Basement
58.1%
Lowest: HMO
36.0%
Spread
17
Types ranked

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All 17 project types ranked

#TypeDecisionsApprovedRefusedRate
1Basement45943227
94.1%
2Conservatory52948940
92.4%
3Wraparound Extension41738532
92.3%
4Side Extension1,8311,662169
90.8%
5Front Extension60054456
90.7%
6Hip-to-Gable Conversion20217725
87.6%
7Rear Extension3,5693,124445
87.5%
8Garage / Parking2,9162,542374
87.2%
9Loft Conversion69460589
87.2%
10Outbuilding1,121976145
87.1%
11Annex1119615
86.5%
12Dormer1,3101,124186
85.8%
13Extension (General)67857999
85.4%
14New Build961805156
83.8%
15Change of Use (Residential)661471190
71.3%
16Flat Conversion785523
70.5%
17HMO432518
58.1%
See how this applies to your postcode →

These are council averages. Your property is specific.

A basement application has a 94.1% approval rate. HMO? Just 58.1%.
Check your postcode to see what actually happens near your address.

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What the data tells us

1
The range is massive: 58.1% to 94.1%. Choosing the right project type — or framing your application correctly — can dramatically affect outcomes.
2
Visibility drives scrutiny. Project types that change the external appearance — dormers, loft conversions, hip-to-gable — face more resistance than those that don't. The more visible your proposal, the more carefully it needs designing.
3
These are council-wide averages. Your ward, your street and your immediate neighbours all shift the odds. The comparable decisions near your property are the best indicator of outcome.

Before you spend £5,000+ on architects and drawings

1,135 planning applications in Runnymede have been refused since 2020. Many of those homeowners had already paid for drawings and application fees. A free, property-specific report shows you what gets approved — and what gets refused — near your property.

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More Runnymede planning data

Methodology: Classifies 8,554 decisions in Runnymede into residential project types using keyword matching against proposal descriptions (matching generate_site_data.py subtype rules). A single application may appear in multiple categories. Data from Runnymede Council's public planning portal, January 2020 to September 2026. Full methodology →
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